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Home >> Subaru >> 2021 >> Outback Limited >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (2.5L) (Diagnostics) (3 Of 4) >> Diagnostic Procedure With Diagnostic Trouble Code (DTC) >> DTC P1C00: Battery Monitor Module "A" Performance >> General Description >> Diagnostic Method
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Diagnostic Method

Judge as NG when the following conditions are established.

JUDGMENT VALUE - DIAGNOSIS 1

Malfunction Criteria Threshold Value
Receives pulse discharge malfunction or ON
Receives voltage measurement malfunction ON
or  
Receives current measurement malfunction ON
JUDGMENT VALUE - DIAGNOSIS 2

Malfunction Criteria Threshold Value
Battery current Less than -1000 A
or
More than 300 A
JUDGMENT VALUE - DIAGNOSIS 3

Malfunction Criteria Threshold Value
Battery voltage Less than 6 V
or
More than 16.2 V
JUDGMENT VALUE - DIAGNOSIS 4

Malfunction Criteria Threshold Value
Battery temperature More than 105°C (221°F)
JUDGMENT VALUE - DIAGNOSIS 5

Malfunction Criteria Threshold Value
Battery SOC More than 100%
JUDGMENT VALUE - DIAGNOSIS 6

Malfunction Criteria Threshold Value
|Battery current (current value) - Battery current (previous value)| 0.003 A or less

Time needed for diagnosis: 

Diagnosis 1  : Less than 1 s

Diagnosis 2, 3, 4 and 5  : 10 s

Diagnosis 6  : 60 s

Malfunction indicator light illumination:  Does not illuminate.